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Chapter 5: Operations with Fractions

Chapter 5: Operations with Fractions. 5.5 Using Customary Units of Measurement. Customary Units of Length. 1 ft = 12 in 1 yd = 3 ft 1 mi = 5,280 ft = 1,760 yd. Customary Units of Capacity. 1 c = 8 fl oz 1 pt = 2 c 1 qt = 2 pt 1 gal = 4 qt. Customary Units of Weight. 1 lb = 16 oz

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Chapter 5: Operations with Fractions

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  1. Chapter 5: Operations with Fractions 5.5 Using Customary Units of Measurement

  2. Customary Units of Length • 1 ft = 12 in • 1 yd = 3 ft • 1 mi = 5,280 ft = 1,760 yd

  3. Customary Units of Capacity • 1 c = 8 fl oz • 1 pt = 2 c • 1 qt = 2 pt • 1 gal = 4 qt

  4. Customary Units of Weight • 1 lb = 16 oz • 1 T = 2,000 lb

  5. Example 1 • Choose an appropriate unit of measure: • Weight of a truck • Length of a hallway rug

  6. Dimensional Analysis • Way of crossing off units

  7. Example 2 • Use dimensional analysis to convert 10 quarts to gallons.

  8. Example 2 • Convert 14 oz to pounds.

  9. Example 2 • Convert 14 inches to feet.

  10. Example 3 • At Store A, a 4 ¼ lb bag of cashew nuts costs $15.99. Store B charges the same price for a 76 oz bag of cashews. Which store gives you more for your money?

  11. Example 3 • Convert 3 ½ lb to ounces.

  12. Example 3 • Convert 3 ½ yd to feet.

  13. Homework • P. 255: • 5-10, 18-29

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